<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
           <div class="button-wrapper" v-for="item of hotCities" :key="item.id" @click="handleCityClick(item.name)">
             <div class="button">{{ item.name }}</div>
           </div>
        </div>
      </div>
      <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{ key }}</div>
        <div class="item-list">
          <div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id" @click="handleCityClick(innerItem.name)">{{innerItem.name}}</div>
        </div>
      </div>
    </div>
  </div>

</template>

<script>
import Bscroll from 'better-scroll'
import {mapState} from 'vuex'
export default {
  name: 'List',
  props: {
    cities: Object,
    hotCities: Array,
    letter: String
  },
  methods: {
    handleCityClick (city) {
      this.$store.commit('cityChange', city)
      this.$router.push('/')
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  },
  computed: {
    ...mapState(['city'])
  }
}
</script>

<style lang="stylus" scoped>
 @import "~styles/variable.styl"
  .border-topbottom
     &:before
       border-color: #ccc
     &:after
       border-color: #ccc
  .border-bottom
    &:before
      border-color: #cccccc
  .list
    position: absolute
    overflow:hidden
    top:1.68rem
    left:0
    right:0
    bottom:0
    .title
      line-height:.54rem
      padding-left:.2rem
      background: #eee
      color: #666
      font-size:.26rem
    .button-list
      overflow hidden
      padding:0.1rem .6rem .1rem .1rem
      .button-wrapper
        width:33.33%
        float: left
        .button
          text-align center
          margin 0.1rem
          padding:0.1rem 0
          border: 0.02rem solid #ccc
          border-radius:.06rem
    .item-list
      .item
        line-height: .76rem
        padding-left:.2rem
        color: #666
</style>
